Briquet-press.



0. ZIMMBRMANN.

BRIQUET PRESS. APPLICATION FILED HAY 11, 1908.

9 1 1 ,104. Patented Feb. 2, 1909.

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INJENTBR ,z A%EW7/M WTNESSES FKNES UNITED sums PATENT onnro.

OTTOZIMMERMANN, or, MAGDEBURG-BUOKAU, GERMANY.

nnIQUET-PnEssf I No. 911,104.

To all whom it may concern: 7

Be itknown that I, Or'ro ZIMMERMANN, engineer, a subject of the German Em eror, King of Prussia, residing at Magde urg- Buckau, 34 Schonebeckerstrasse,Germany; have invented certain new and useful Improvements in Bri'quet-Presses; and I do ereby declare the following to bea full,

clear, and exact description of the invention, such as will-enable others skilled in the art to which it appertains to make and use the same.

This invention relates to a briquet press and consists mainly in an improved arrangement of the crankshaft the pin of the pressure crank being given greater length than was heretofore in use, and the disks of the crank being dispensed with so as to make room for the increased length of pin between the bearings of the crankshaft.

This invention further consists in an improved form of the bush of the pressure crank pin. According to my invention I provide this bush with cooling chambers throu h which water is made to circulate.

In t e accompanying drawings Figure 1 is a side view and Fig. 2 a plan of a press according to my invention the parts to which it specially relates being shown in section.

In briquet presses driven'by steam the pressure crank shaft Z is operated ina known manner from the piston of the steam cylinder a by means of a traverser or cross head 6, two connecting rods 0 and two cranks d. The ressure crank 7c is mounted between two earings and its shaft [carries a fly wheel m on either side outside the bearings. The motive force stored by these fly wheels during each revolution of the crankshaft is transmitted by the pressure crank to the rod n and to the press plunger 0 during the working stroke of the press.

In the hitherto known form of briquet presses the pressure crank shaft was-provided with separate crank disks on the inside of the crank shaftbearings andbetween these disks was placed the pressure crank pin.

Thehigh pressure emplo ed in briquet making combined withthe shortness of the pressure crank in hitherto use frequently caused t e heating of the bearing of the cranklc in the head of the rod n and by the heat spreading to t e adjoining parts the bearings q of thecrank shaft were also frequently found to be special cooling device is employed it has Specification of Letters Patent. 'Application filedMey 11, 1908. Serial No. 432,165.

heated. Unless a Patented Feb. 2, 1909.

been found that this heating of the pressure 1Lgearandthe consequence ensuing can only e av'oided by increasing the length ofthepressure crank pin. An enlargement of diameter has been found to be of no use.

The crank pin might be made longer by increasing the distance between the bearings of the crank shaft and-in this case the crank disks-hitherto in use might be retained. The distance between the bearings of the crank shaft is however limited by the necessity'of constructing the press and the steam "engine operating it in one single piece of suffic'ient strength to withstand the extra high pressure exercisedin 'bri uet making.

The driving gear of steam distri uting valves alsoforms an obstacle to increasing the dis tance between the bearings. Greater distance between the bearings would further necessitate greater length of the cross head of the steam engine and consequently greater strength of this part. The cross head at present in use in presses of this kind is however already as strong as it can be conveniently made, both from the technical and the economic point of view. Also a greater length of this part would endanger the equal action of the two rods operating the fiy wheels.

According to the present invention I gain the necessary space for greater length of the pressure crank pin without increasing the distance between the shaft bearings by doing away with the crank disks altogether, and

'joining the crank pin is immediately to the bearing pins or journals 1" of the crank shaft.

By this means nearly the whole thickness of the disks can be added to the length of the crank pin. In the accompanying'drawings it will be easily seen that the crank pin is is lengthened in this manner. The diameter of the bearing in or journal has in consequence to be en arged so that it substantially equals the diameter of the former disks. Owing to the short stroke of the press crank this enlargement is however not considerable.

In order to effectively prevent heating of the press crank bearing the bushes of this bearing are provided with cooling chambers according to my inventionand water is made to circulate through them. In the accompanying drawings e are the bushes, f are the ranged one behind the other and are con nected With each other by openings 1' so that the cooling medium flows through all the chambers in succession. In order to cause the Water to circulate through both halves of the bushing c, each half may be provided with separate inlets and outlets g and h, or, if it is found desirable to have but a single inlet and outlet, corresponding chambers in the separate halves of the bushing may be connected together by means of short adjustable pipe sections, or by providing the adjacent faces of the bushing with registering orifices and placing a shim or packing provided with similarly disposed orifices between the faces, so that the liquid will be caused to flow from one half of the bushing into the other. The chambers may also be arranged to form a canal Winding round the Whole bearing.

Having now particularly described and ascertained the nature of my said invention and in What manner the same is to be performed, I declare that What I claim is:

1. In a briquet press, the combination of l the press member, the motor therefor, side frames connecting said parts, and a crank shaft j ournaled in said side frame and serving to operatively connect the motor with the press member, bearings in the side frames for said journals, a chambered bushing on the crank shaft, and inlet and Xllallst passages for cooling fiuid connected with said chambered bushing.

2. In a briquet press, the combination with the press member, the motor therefor, side frames connecting said parts, a crank shaft provided with onrnals of larger diameter and an intermediate crank pin, bearings in the side frames to receive the enlarged journals, a chambered bushing on the pin, and inlet and exhaust passe es for cooling; fluid connecting with said chambered bushing.

In testimony whereof I have allixed my signature, in presence of two Witnesses.

OTTO ZIMME MANN \Vitnesses:

MARIE SCHNEIDER, ALBIN CHRrsT. 

